Automatic air-valve for gas-manifolds.



` E, T. SUUDDER.' v AUTOMATIC Aim VALVE FOR GAS mmoms.-

APPLICATION FILED 1411.11.15', 19m

mmm Feb. 24, im. v

y UNITED STATES PATENT OFFICE.

EUGENE T. SCUDDER, 40E NEWARK, NEW JERSEY.

AUTOMATIC AIR-VALVE FOR GAS-MANIFOLD-S.

Specification of Letters Patent.'

Application filed March 15, 1918. Serial No. 754,457.

To all Iu-/wm it may concern: l

Be it known that I, EUGENE T. SCUDDER, a citizen 'of the United States, residing at 27 East Park street, Newark, county of Essex, and State/of New,.Ierse-y, have invented certain new and 'iliiseful Improvements in -Automatic Ain-,Valves for Gras- Manifolds, fully deseribed',a1d-represented l operate in anautomatic manner to dilute the gases on their way to the cylinders, but

which may be adjusted, when required, to vary the opening off-the valve and consequent delivery of airt'the' gases.

T he device isV formed as an attachment to the gas-manifold, and has a valve held upon its seat by s'pring-pressureV and opened vautomatically-by the suction of the engine pis tons; and the invention comprises a special construction for the 'air-valve andthe mea-ns of varying or changing the spring-pressure when desired, to modify the opening of the valve and the consequent supply of air to the gases.

, The construction will be' understood by reference to the annexed drawing, in -which- Figure l s a diagram illustrating the oonnection of a carbureter and manifold to the engine cylinders, and the application` of the air-valve to the gas-manifold; and`Fig.- 2 is a longitmlinal section of the air-valve and4 its connections. 1

a designates the engmecyllnders o whlch the opposite ends of the gas-manifo d' b' are connecte l l; r

A mixing-chamber c is se'dliied to a branchpipe at Thebe-@tom of the manifold` and the carburctenl fisgconnected therewith and delivers a mixture of air and gas into the same,

from whicriit. is `drawn into the manifold ihr charging movement of the eng1ne-p1s tors.

The attachment is shown as an air-pipe e l|a\'in; at one side a nozzle f threaded to err-cw imo the top of the manifold.l such nozzle' having a. valve-scat y therein 'with a vala-r /f seated thereon and ffirmed to open under the pressure of the atmosphere. The

valve-stem h extends acrossy theair-pipe e, and a bridge t' is provided to guide it in its movements. One end of the air-pipe is open where an arrow f is shown leading inwardly to indicate the entrance of air, and the opposite end is closed and constructed with a guide Z through which a rod m is movable.

The. valve-stem is provided with a collar 7c, and a leaf-spring c is secured within the air-pipe and forked at its free end to press agiainst such collar and hold the Valve It elastically upon its seat. The spring' is extended toward the guide Z and is secured to the pipe e by screw or rivet e. A regulator.- block 71, is movable within the tube and holds the spring closeto the side of the tube wherever the block is adjusted, and the spring is vsloped or curved away from the side of the tube toward the under side of the collar lc, so that the movement ot the block toward the valve-stem operates upon the inclined surface of the spring and presses it more closely to the inner side of the tube. This presses the forked end of the spring toward the collar and thus increases the pressure of the valve upon its seat.

The rod m is extended to a hand-lever 0 upon the steeringhea'd p of the motor car, in proximity to the steering-wheel q; so that-the operator can vary thev adjustment of the regulator-block n Whenever desired.

It is well known that the explosive character of themixture'supplied to the' motorcylinders is affected in its operation by the character of the atmosphere, when the same varies in dryness or moisture, or is more or less dense or rarefied by baromctric variations, but the attachment, comprising the valve h and its regulated spring-pressure, furnishes a means of varying the How of air which is drawn into the gas-manifold past the'valve h, and thus produces the desired mixture in the cylinders.

The opening of the valve varies inversely with thel pressureV of the spring 7c upon thecollar x: oftheYalve-s'tem, and the adjustment otthe regulator-block thus determines the volume of air that is supplied to the gas-'manifold through such valve. The regulator-block is adjusted by the operatorA until the operation of the engine is p satisfactory, and does not thereafter require adjustment'for 'a considerable time, funtil I atmospheric conditions or some variation in the quality 'of the gasolene 4affects the mixture which supplied to the gas-manifold bythe carbureter. `When such variation arises the supply of air through the valve h of the motor-.en ines.

I am aware 't atamair-valve lcontrolled by a variablbljepkirigpressure has heen used incombination' w-itlra -throttle-valve, and a hand-lever which varies the spring-pressure when moving such throttle-v'alv Whereas my invention requires no throttle-valve, but consists inaspec'ial construction of the airvalve and the means for varying its springpressure. A

The attachment is obviousl applicable to the gas-manifold of lany int .nal combus tion engine inwhich a gasmanifold is connected to the cylinders, so that the attachment may operate to deliver air equally to the mixture which is supplied to all of the cylinders.

lHaving thus set forth tlfe nature ort-my invention what is claimed herein is:

1. Thefairr-valve for gas-manifolds comprising che air-pipe e open at one end and closed at fthe opposite end, and having a 55 nozzle f at one side with the valve-seat g therein, the valve z, seated thereon and having a valve-stem extended across the airpipe and opened by atmospheric pressure, 'a spring located in the air-pipe and operat- 40 `ing to holdl the valve elastically upon the seat, and means operating in the closed end of, the air-pipe, with connection to a hand"u lever, froperating upon the spring to-vary its pressure on the valve. @a

2. attachment for gas-engines, comprisng an air-valve with aperture to receive the air and an outlet provided with a valve-seat, a valve seated thereon and opened by atmospheric pressure and having 50 a-valve-stem extended across the air-pipe and `provided with a collar, a valve-springr secured inside the airpipe with its free end engaging the said collar, and a regulatorblock movable in the air-pipe in Contact with the spring 4to vary its effect upon vthe f valve-stem.

In testimony whereof I have hereuntoiset my hand in the presence of. two subscrlbing witnesses.

' EUGENE T. SCUDDER.

Witnesses:

L. LEE, THOMAS S. CRANE. 

